22645258667 has 4 divisors (see below), whose sum is σ = 22645750176. Its totient is φ = 22644767160.

The previous prime is 22645258651. The next prime is 22645258693. The reversal of 22645258667 is 76685254622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22645258667 - 2⁴ = 22645258651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22645258627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168563 + ... + 271484.

It is an arithmetic number, because the mean of its divisors is an integer number (5661437544).

Almost surely, 2^22645258667 is an apocalyptic number.

22645258667 is a deficient number, since it is larger than the sum of its proper divisors (491509).

22645258667 is an equidigital number, since it uses as much as digits as its factorization.

22645258667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491508.

The product of its digits is 9676800, while the sum is 53.

The spelling of 22645258667 in words is "twenty-two billion, six hundred forty-five million, two hundred fifty-eight thousand, six hundred sixty-seven".